Beamless car-brake.



PATENTBD AUG.`18, 1903.

J. S. CARY. BEAMLBSS GAR BRAKE.

APPLICATION HLBDAPR. 27, 190s.

NO MODEL.

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Patented August 18, 1903.

PATENT OEEICE.

JOI-IN S. CARY, OF DENVER, COLORADO.

BEAM LESS CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 736,686, dated August18, 1903.

Application filed April 27, 1903. Serial No 154,517. (No model.)

To all whom it vii/ty concern,.-

Be it known that I, JOHN S. CARY, a citizen of the United States,residing at Denver, in the county of Denver, State of Colorado, haveinvented certain new and useful Improvements in Beamless Car-Brakes, ofwhich lthe following is a description,reference being had to theaccompanying drawings and to the figures of reference marked thereon.

My invention relates to carbrakes,particu larly the class of car-brakescommonly known as beamlessthat is, brakes in which the brake-beamcommonly used in connection with each axle to carry the brake-shoes forthe wheels of that axle is dispensed with.

The advantages of dispensing with the brake-beam are Well understood andneed not be here stated.

My invention has for its object to provide a simple and effective brakemechanism in which the brake-shoes are carried by levers supported fromthe car-truck without the necessity for brake-beams; and my inventionconsists in the construction and combination of elements hereinafterdescribed, and par ticularly referred to and pointed out in the claims.

In the drawings, Figure l is a side View of a car having my brakemechanism applied thereto, and Fig. 2 is a bottom'view of the same. c

The invention is herein shown in connection with a car carried by twofour-wheelV trucks of usual construction, the details of theconstruction of the car-body and trucks not being shown in full, as theyform no part of the invention.

In the construction shown, 1 represents an air-brake cylinder and pistonof usual construction, secured to the car-body. The piston-rod 2 ispreferably slotted, as shown at 3, and to it is connected, preferably bymeans of a pin 4., extending through this slot, a lever 5, which issuitably supported, preferably by a guide 6, secured to the car-body,and is connected intermediate its ends by a link 7 to a similar lever 8,having one end pivotally connected to the head of the air-brakecylinder.

To the free end of the lever 5, which is preferably horizontallyarranged, is connected by a link 9 a vertically-arranged actuating-lever10, pivotally connected at its upper end to the car-body, preferably ata point in line with the center line of the car. The link 9 is connectedto the actuating-lever 10 at a point intermediate its ends, preferably alittle above its middle point. A rod 11, carrying a spring 12, isconnected to the actuatinglever 10 at one end and at its other endslides in an abutment 13, secured to the car-body. The spring bears atone end against a head formed on the rod and at the other end againstthe abutment.

To the free end of the actuating-lever is pivotally connected one end ofa brake-rod 14, which at its other end is pivotally connected to anequalizer 15. The equalizer is preferably bowed or U-shaped, and the rod14 is preferably connected to it at its middle pointl At its ends theequalizer is pivotally connected to the inner ends of horizontal livethe two axles of the truck, extend outward beyond the planes of thecar-wheels,and have pivotedA to them, arranged to bear against theWheels of the axle nearest the middle of the car, the brake-shoes 17.The levers 16 are supported by hangers 18,secured to the truck frame andhaving horizontal portions 19, on which the levers 16 slide freely.

The outer ends of the levers 16 are connected by links 2l with the outerends of horizontal dead levers 22, to which are pivoted brake shoes 23,arranged to bear against the Wheels of the axle farthest from theactuating mechanism. The levers 22 are similar to the levers 16, buthave their inner ends pivoted to the horizontal portions 24 of thehangers 25, secured lin any convenient manner to the truck-frame. Thepivots of the levers 22 are preferably made adjustable on the horizontalportions 24, as sho-wn.

The devices above described provide for applying brakes to the Wheels ofthe truck at the left of Figs. 1 and 2. The devices for applying brakesto the wheels of the truck at the other end of the car are similar, withthe exception that they are oppositely arranged and are operated throughthe lever 8 and link 26.

In operation as the piston-rod 2 is forced outward it effects an equalpull upon the links IOO brake-shoes, force the outer ends of the le-`vers 22 toward the wheels against which their brakeshoes 23 bear, and asthe inner ends/of these levers are pivoted to the hangers 25 thebrakeshoes 23 will be forced against the wheels. The rotation of thecar-Wheels as the brake-shoes are forced against them tends to move thebrake-shoes either up or down, depending on the direction in which thecar is going and depending on whether the brakeshoe is applied to thefront or rear of the wheel. As the live and dead levers are connected attheir outer ends by a link, as described, he tendency of the brake-shoecarried by the live lever to move, whether up or down, is counteractedby the tendency of the brake-shoe carried by the dead lever to move inthe opposite direction, with the result that comparatively little strainis brought on the hangers by which the live and dead levers aresupported.

While I have shown an air-brake cylinder as the means for operating theactuating-lever of the brake mechanism, it should be understood that anyother known actuating means-such, for instance, as the ordinaryhand-wheel-may be used for operating the actuating-lever, as indicatedin Fig. 2. It should also be understood that while I have shown thebrake mechanism in connection with a four-wheel truck it may readily beapplied to a truck having more than four wheels.

Having thus described my invention, what Iclaim, and desire to secure byLetters Patent, is-

l. In a beamless car-brake, the combination of brake -shoes,horizontally arranged live and dead levers each carrying a brakeshoepivotally connected therewith intermediate its ends, means forsupporting the live and dead levers from the car-truck, an equalizerpivotally connected at its ends to the inner ends of the live levers,links connecting the outer ends of the live levers with theircorresponding dead levers, and means connected to the equalizer at itscenter for moving the equalizer to cause the brakes to be set;substantially as described. y

2. In a beamless car-brake, the combination of brake-shoes,horizontally-arranged live and dead levers located below the plane ofthe car-axles, each carrying a brake-shoe pivotally connected therewithintermediate its ends, means for supporting the live and dead leversfrom the car-truck, an equalizer pivotally connected at its ends to theinner ends of the live levers, links connecting the outer ends of thelive levers with their corresponding dead levers, and means connected tothe equalizer at its center for moving the equalizer to cause the brakesto be set; sub- Y stantially as described.

3. In a beamless car-brake, the combination of brake-shoes,horizontally-arranged live and dead levers, each carrying a brakeshoepivotally connected therewith intermediate its ends, means forsupporting the live and dead levers from the car-truck, a U- shapedequalizer pivotally connected at its ends to the inner end of the livelevers, the linksconnecting the outer ends of the live levers with theircorresponding dead levers, and means connected to the equalizer at itscenter for moving the equalizer to cause the brakes to be set;substantially as described.

4. In a beamless car-brake, the combination of brake-shoes,horizontally-arranged live and dead levers each carrying a brakeshoepivotally connected therewith intermediate its ends, means forsupporting the live and dead levers from the car-truck, an equalizerpivotally connected at its ends to the inner ends of the live levers,links connecting the outer ends of the live levers with theircorresponding dead levers, means connected to the equalizer at itscenter for moving the equalizer in one direction to cause the brakes tobe set and for moving it in the opposite direction to release thebrakes; substantially as described.

5. In a beamless car-brake, the combination of brake-shoes,horizontally-arranged live and dead levers, each carrying a brakeshoepivotally connected therewith intermediate its ends, means forsupporting the live and dead levers from the car-truck, an equalizerpivotally connected at its ends to the inner ends of the live levers,links connecting the outer ends of the live levers with theircorresponding dead levers, a brake-rod pivotally connected at one end tothe center of the equalizer, an actuating-lever to the lower end ofwhich the other end of the brakerod is pivotally connected, pivotallyconnected at its upper end to the car-body, and means connected with theactuating-lever intermediate its ends for moving it to cause the brakesto be set; substantially as described. v

6. In a beamless car-brake, the combination of brake-shoes,horizontally-arranged live and dead levers, each carrying a brakeshoepivotally connected therewith, intermediate its ends, means forsupporting the live and dead levers from the car-truck, an equalizerpivotally connected at its ends to the inner' ends of the live levers,links connecting the outer ends of the live levers with theircorresponding dead levers, a brake-rod pivotally connected at one end tothe center of the equalizer, an actuating-lever to the lower end ofwhich the other end of the brake-rod IOO In testimony whereof I aix mysignature in presence of two witnesses. r

JOHN S. CARY.

Witnesses:

E. F. RICHARDSON, T. L. TAYLOR.

